Firmware — B311-221 Unlock

Firmware — B311-221 Unlock

Unlock firmware is a modified or official software version that removes the SIM lock restriction. In many cases, you may only need to update to a "General" or "Global" firmware version to enable the SIM lock menu, where you can then enter a unique 15-digit IMEI-based unlock code.

If your router’s current firmware has hidden the unlock menu, you may need to flash a general version. Huawei B311-221 Firmware Release Notes | PDF - Scribd B311-221 Unlock Firmware

Often used to fix stability issues and is a common target for those looking for "clean" firmware. Unlock firmware is a modified or official software

Place a SIM card from a different carrier into the router and power it on. B311-221 Unlock Firmware

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